Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 91: | \[{25^{91}-1\over24}\] | 29 × 449 × 5227 × 19531 × 38923 × 305175781 × 15887476811320661<17> × 9680647790568589086355559<25> × 17499733663152976533452519<26> × 15994146485373751289418997754783021<35> |